package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.sky.context.BaseContext;
import java.time.LocalDateTime;
import java.util.ArrayList;

/**
 * ClassName: CategoryServiceImpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author 龙培
 * @Create 2025/3/1 14:25
 * @Version 1.0
 */
@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);
        category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.updateCategory(category);
    }

    @Override
    public void addCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        category.setStatus(StatusConstant.ENABLE);

//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.insertCategory(category);
    }

    @Override
    public PageResult pageCategory(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageCategory(categoryPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public ArrayList<Category> pageCategoryByType(Integer type) {
        ArrayList<Category> categories = categoryMapper.pageCategoryByType(type);
        return categories;
    }

    @Override
    public void updateCategory(Long id, Integer status) {
        Category category = new Category();
        category.setId(id);
        category.setStatus(status);

//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.updateCategory(category);
    }

    @Override
    public void deleteCategory(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        //删除分类数据
        categoryMapper.deleteCategory(id);
    }
}
